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UUID Generator

Generate, validate, and inspect universally unique identifiers

Time-based

UUID V1

f91afeb0-af26-11f1-9789-8935889f6020
Random

UUID V4

8a40541d-9f37-491d-adc9-311c0f1f43a3
Name-based

UUID V5

73e17359-a408-586a-8886-528fa0452839

Batch Generator

Version

UUID Validator

Paste a UUID to check if it's valid and identify its version.

UUID Versions Explained

Version 1

Uses the current timestamp and MAC address. Guarantees uniqueness but may expose hardware identity.

Version 4

Purely random. The most commonly used version — simple, private, and virtually zero collision probability.

Version 5

Derived from a namespace + name using SHA-1. Deterministic: the same inputs always produce the same UUID.